Multiple blog??

I'm new to blog Engine and I'm wondering if it would be possible to used it by, let say 4 persons, in a way that it gives them the feel that they almost have their own blog without me habving to install 4 blogengine on my little website. I understand that
there is multiple author & categories, but it doesn't seems t o have for example an (optional) link between a page and a post that could give the ability to, let say, JOE to create a page named JOE where he could redirect all his friend to domainBExx/JOE/...
to read all his posts entries.. ?